[PATCH v3 0/4] Fixes for memmap accounting

Pasha Tatashin
2024-08-08T15:42:44Z

Memmap accounting provides us with observability of how much memory is
used for per-page metadata: i.e. "struct page"'s and "struct page_ext".
It also provides with information of how much was allocated using
boot allocator (i.e. not part of MemTotal), and how much was allocated
using buddy allocated (i.e. part of MemTotal).

This small series fixes a few problems that were discovered with the
original patch.

Changes:
- Added patch "mm: add system wide stats items category"
- Changed from using system-wide events to system-wide stats
v2:
https://lore.kernel.org/lkml/20240807211929.3433304-1-pasha.tatashin@soleen.com

Pasha Tatashin (4):
mm: update the memmap stat before page is freed
mm: don't account memmap on failure
mm: add system wide stats items category
mm: don't account memmap per-node

include/linux/mmzone.h | 2 --
include/linux/vmstat.h | 22 +++++++-----------
mm/hugetlb_vmemmap.c | 13 +++++------
mm/mm_init.c | 3 +--
mm/page_alloc.c | 1 -
mm/page_ext.c | 15 +++++--------
mm/sparse-vmemmap.c | 11 ++++-----
mm/sparse.c | 5 ++---
mm/vmstat.c | 51 ++++++++++++++++++++----------------------
9 files changed, 49 insertions(+), 74 deletions(-)

--
2.46.0.76.ge559c4bf1a-goog